Roller-cover-casting machine.



A. MATTIGK. ROLLER COVER CASTING MACHINE. APPLICATION FILED APB. 14, 1910.

968, 1 75. Patented Aljlg. 23, 1910.

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UNITED STATES PATENT OFFICE.

AUGUST MATTICK, OF NUREMBERG, GERMANY, ASSIGNOR TO NT IRNBERGER KUNST- GUMMIFABRIK GUSTAV KQPP, 0F NUREMBERG, GERMANY.

ROLLER-COVER-CASTING MACHINE.

Specification of Letters Patent. Patented Aug. 23, 1910- Application filed April 14, 1910. Serial No. 555,378.

T 0 all whom it may concern:

Be it known that I, AUGUsT MATTIOK, a citizen of the Empire of Germany, residing at Nuremberg, in the Empire of Germany, have invented a new and useful Roller- Cover-Casting Machine, of which the following is a specification.

My invention relates to improvements in roller cover casting machines, whereby the liquid cover mass is prevented from flowing out or escaping during the insertion of the supporter carrying the roller to be covered, so that not only a defilement of the cover mass, but also a sinking of the level of the liquid mass in the mold beneath the predetermined limit is avoided.

One improvement consists in a vertical cylindrical mold open at top and bottom.

Another improvement consists in providing the separate bottom with legs and with a shoulder on which the cylindrical mold can be put.

A third improvement consists in a tube carrier with arms adapted to be pressed against the bottom from below after a packing ring has been inserted between them.

A fourth improvement consists in extensible means for connecting the arms of the tube carrier with the upper edge of the cylindrical mold.

A fifth improvement consists in a vertical spindle longitudinally guided in the tube carrier and adapted to support with its top the lower end of any roller to be covered, the lower end of this spindle being provided with a handle which engages in a bent slot in the vertical tube, so as to preliminarily hold the roller in an upper position and to afterward permit it to drop and to shut off the central inlet in the bottom.

Other improvements will be hereinafter described and pointed out in the claims.

I will now proceed to describe my invention with reference to the accompanying drawing, in which Figure 1 is a vertical longitudinal section through an improved roller cover casting machine, the roller occupying its upper extreme position, and Fig. 2 is a similar section, in which the roller occupies its lower extreme position.

Similar letters of reference refer to similar parts in both views.

(Z denotes a bottom, which is provided with suitable legs a and has along its edge a shoulder c on which a cylindrical mold 6 can be put. WVhere so preferred, a packing ring (marked by thick black lines) may be inserted between the bottom cl and the mold a, before the latter is put on. The bottom cl has a central inlet 6, in which one collar j of any roller 3 to be covered can engage for centering the latter. A tube carrier h is provided, which is adapted to hold a vertical tube 9 and has two or more arms 2' 2' that can be connected with the upper widened edge of the mold e by means of extensible chains is Z and hooks a. Each extensible chain is shown to consist of two chains 70 and Z and a screw-joint m between them. However, it may be of any other known construction. A packing ring f of india rubber or the like surrounding the upper tubular projection of the tube carrier 77. is preferably inserted between the latter and the bottom (Z for insuring the tightness of the mold. A supply tube 25 can be connected with the vertical tube 9 in any known manner. An india rubber disk 1 beneath and a sieve 8 above the supply tube t are provided in the tube 9 and serve for guiding a vertical central spindle g which is provided at its upper end with a cup 0 and at its lower end with an arm w. The two pivots p and z of any roller y have roundedoff end faces, either of which can engage in the said cup 0. The arm w passes through a bent slot a m in the tube 9 and has a handle 1; without by means of which the spindle Q can be operated.

The apparatus described may be used for covering rollers y with any material, for example india rubber or the like, so that the so covered rollers can serve various purposes, for example they may be inking rollers or the like.

The apparatus operates as follows: The cylindrical mold e is put on the shoulder a of the bottom (Z, after a packing ring has been previously placed. A roller :1 to be covered is introduced into the mold e and of the mold e by means of the extensible chains A Z, so as to press the cylindrical mold 6 against the bottom from above and to press the tube carrier 72, with the packing ring f against the bottom (Z from below. Then the roller l is raised into its upper extreme position shown at Fig. 1, the spindle 9 being pressed upward until its arm to strikes the upper end of the vertical portion a of the bent slot at 00, whereupon the handle 1) is turned to a side so that the arm 10 engages in the horizontal portion of the slot u m and secures the pivot 79 in its correct position. A centering cross (not shown) may be put over the upper pivot z of the roller g and made to engage the widened edge of the mold. By opening the respective source the liquid cover mass (india rubber for example) is then permitted to enter the mold 0 through the supply tube t, the perforations of the sieve s, the vertical tube 9 and the central inlet 12. As soon as the level of the liquid cover mass in the mold 6 reaches the limit (determined by trials or otherwise), the supply is shut off and the handle 1) is so turned as to cause the arm 10 to engage in the vertical portion a of the slot 14 w, after which the roller y is permitted to sink and to engage with its collar j in the central inlet Z), so that it rests with its own end face on the bottom (Z. Thus the liquid cover mass is prevented from escaping, so that after congealing the cover on the roller 3 will have the proper size, and no losses of ma terial are incurred.

Of course the operation of the machine described may be varied to suit the circumstances.

The roller cover casting machine can be varied without departing from the spirit of my invention. The sieve 8 may be exchanged for another one with more or less perforations, so as to regulate the quantity of liquid cover mass admitted per unit of time.

I claim:

1. In a roller cover casting machine, the combination with a bottom having a central inlet, of a vertical tubular mold adapted to be secured on said bottom, asupply connection for liquid cover mass beneath said bottom, a vertical spindle longitudinally guided in said supply connection and adapted to support any roller to be covered while centering it, and means for shifting said spindle so as to permit the liquid cover mass to enter said mold and to permit the roller to shut off the supply.

2. In a roller cover casting machine, the combination with a bottom having a central inlet, of a vertical tubular mold adapted to be put on said bottom, a supply connection for liquid cover mass beneath said bottom and having arms, means connecting the arms of said supply connection wit-h the upper edge of said tubular mold, a vertical spindle longitudinally guided in said supply connection and adapted to support any roller to be covered while centering it, and means for shifting said spindle so as to permit the liquid cover mass to enter said mold and to permit the roller to shut off the supply.

3. In a roller cover casting machine, the combination with a bottom having a central inlet, of a vertical tubular mold adapted to be put on said bottom, a supply connection for liquid cover mass beneath said bottom and having arms, a packing ring between said bottom and said supply connection, extensible chains connecting the arms of said supply connection with the upper edge of said tubular mold, a vertical spindle longi tudinally guided in said supply connection and adapted to support with its upper end the lower pivot of any roller to be covered while centering it, means for centering the upper pivot of the roller on the upper edge of said tubular mold, and an arm fastened at the lower end of said spindle and provided with a handle, said supply connection having a bent slot for said arm, so as to support the roller in an upper position for permitting liquid cover mass to enter said mold and to permit the roller to sink and to shut off the supply.

AUGUST MATTICK. Vitnesses HANS SoHonnR, GUSTAV Kori 

